T3D Re: Iris placement

[William Carter <wc@xxxxxxxxxxxx>]

Peter Homer writes:
>>>you put the iris where the chief ray crosses the optic axis.
>
>I dont recal seeing this originaly and dont have any record of it to refer
>to further.

That's because I erred. I find that the original post, dated 12 Oct 1997,
was to P3D, not T3D. Though T3D seems to me the better forum for my question.

>Perhaps William Carter has been wondering as I have about the possibilities
>of using stereo cameras without removeable lenses on stereo and biocular
>microscopes

Close. As you probably know, my stereo-of-choice is single lens 3-D. I have
a device which will clip onto an ocular to give me stereo. What I'm
wondering is, 
1.  if I'm using an ocular as a field lens, what's the best configuration
and placement for the relay lens? 
2. How do I create an aperture stop?

Should the exit pupil of the field lens coincide with the enterance pupil of
the relay lens, and is an aperture stop created there? Or am I totally lost
here?


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End of TECH-3D Digest 235
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